4 ideas
10245 | One geometry cannot be more true than another [Poincaré] |
18201 | General principles can be obvious in mathematics, but bold speculations in empirical science [Parsons,C] |
16698 | Days exist, and yet they seem to be made up of parts which don't exist [Burley] |
16690 | Unlike permanent things, successive things cannot exist all at once [Burley] |